180199999836 has 60 divisors (see below), whose sum is σ = 475481087928. Its totient is φ = 59505284448.

The previous prime is 180199999807. The next prime is 180199999843. The reversal of 180199999836 is 638999991081.

180199999836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2564271 + ... + 2633606.

Almost surely, 2^180199999836 is an apocalyptic number.

It is an amenable number.

180199999836 is an abundant number, since it is smaller than the sum of its proper divisors (295281088092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

180199999836 is a wasteful number, since it uses less digits than its factorization.

180199999836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5198000 (or 5197989 counting only the distinct ones).

The product of its (nonzero) digits is 68024448, while the sum is 72.

The spelling of 180199999836 in words is "one hundred eighty billion, one hundred ninety-nine million, nine hundred ninety-nine thousand, eight hundred thirty-six".